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Finland
Kittila Mine

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 Location:
5 km NE from Kiistala, Finland

  Address:
Pokantie 541
Kiistala
Finland
99250
Phone  ...  Subscription required
Fax+358-16-338-07701
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Silver
Mining Method
  • Open stoping
  • Cemented backfill
  • Paste backfill
Processing
  • Electric furnace
  • Carbon re-activation kiln
  • Crush & Screen plant
  • Smelting
  • Flotation
  • Counter current decantation (CCD)
  • Agitated tank (VAT) leaching
  • Pressure oxidation
  • Carbon in leach (CIL)
  • Carbon adsorption
  • Elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life2034
Kittilä mine is the largest gold mine in Europe.


Owners

Source: p. 37, 60
CompanyInterestOwnership
Agnico Eagle Mines Ltd. 100 % Indirect
Agnico Eagle Finland Oy (operator) 100 % Direct
The Agnico Eagle Mines Ltd's operations in Finland are conducted through its indirect subsidiary, Agnico Eagle Finland Oy, which owns the Kittila mine.

Deposit Type

  • Hydrothermal
  • Metamorphic


Summary:

The Kittila mine is situated within the Kittila Greenstone belt, part of the Lapland Greenstone belt in the Proterozoic-age Svecofennian geologic province. The appearance and geology of the area is similar to that of the Abitibi region of the Canadian Shield. In northern Finland, the bedrock is typically covered by a thin but uniform blanket of unconsolidated glacial till. Bedrock exposures are scarce and irregularly distributed.

The mine area is underlain by mafic volcanic and sedimentary rocks metamorphosed to greenschist assemblages and assigned to the Kittila group. The major rock units trend north to north-northeast and are near-vertical. The volcanics are further sub-divided into iron-rich tholeiitic basalts located to the west and magnesium-rich tholeiitic basalt, coarse volcaniclastic units, graphitic schist and minor chemical sedimentary rocks located to the east. The contact between these two rock units consists of a transitional zone (the "Porkonen Formation") varying between 50 and 200 metres in thickness. This zone is strongly sheared, brecciated and characterized by intense hydrothermal alteration and gold mineralization, features consistent with major brittle-ductile deformation zones. The zone is part of a major north-northeast-oriented shear zone (the "Suurikuusikko Trend").

The Porkonen Formation hosts the Kittila gold deposit, which contains multiple mineralized zones stretching over a strike length of more than 25 kilometres. Most of the work at the Kittila mine has been focused on the 4.5 kilometre stretch that hosts the known gold in mineral reserves and mineral resources. From north to south, the zones are Rimminvuoma ("RimpiS"), the deep extension of Rimminvuoma ("Rimpi Deep"), North Rouravaara ("RouraN"), Central Rouravaara ("RouraC"), depth extension of Rouravaara and Suurikuusikko ("Suuri/Roura Deep"), Suurikuusikko ("Suuri"), Etela and Ketola. The Suuri and Suuri/Roura Deep zones include several parallel subzones that have previously been referred to as Main East, Main Central and Main West. The Suuri zone hosts approximately 5% of the current proven and probable gold reserve estimate on a contained gold basis, while Suuri Deep has approximately 20%, RouraN and RouraC approximately 3%, Roura Deep approximately 41%, Rimpi Deep approximately 24% and RimpiS approximately 7%.

Gold mineralization in these zones is associated with intense hydrothermal alteration (carbonate-albite-sulphide), and is almost exclusively refractory, locked inside fine-grained sulphide minerals: arsenopyrite (approximately 73%) or pyrite (approximately 23%). The remainder is free gold, which is manifested as extremely small grains of gold in pyrite.


Mining Methods

  • Open stoping
  • Cemented backfill
  • Paste backfill


Summary:

Mining at Kittila started initially using the open pit mining method. Open pit mining ended in November 2012 and all mining is currently carried out underground via ramp access.

At the Kittila mine, the Suurikuusikko, the Rouravaara and the Rimpi orebodies are currently mined by underground mining methods accessed via ramp. Approximately 5,000 to 5,500 tonnes of ore per day are fed to the processing plant. The underground mining method is open stoping with delayed backfill. Stopes are between 25 and 40 metres high and yield between 8,000 and 40,000 tonnes of ore per stope. To ensure sufficient ore production is available in the future to supply the mill, 15,000 to 17,000 metres of tunnels will be developed each year. After extraction, stopes are filled with paste backfill or cemented backfill to enable the safe extraction of ore in adjacent stopes. Ore is trucked to the surface crusher via the ramp access system.

On February 14, 2018, the board of directors (the "Board") of the Company approved the construction of a 1,044 metre deep shaft, a processing plant expansion as well as other infrastructure and service upgrades. In 2020, the mill expansion was completed in October and shaft construction continued (84% complete at year-end). COVID-19 related travel restrictions affected the availability of the foreign workforce utilized for shaft sinking and commissioning of the production hoist has been postponed to 2022.


Crushing and Grinding
Flow Sheet: Source
Crusher / Mill TypeModelSizePowerQuantity
SAG mill 1


Processing

  • Electric furnace
  • Carbon re-activation kiln
  • Crush & Screen plant
  • Smelting
  • Flotation
  • Counter current decantation (CCD)
  • Agitated tank (VAT) leaching
  • Pressure oxidation
  • Carbon in leach (CIL)
  • Carbon adsorption
  • Elution
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

Ore is processed in a 6,000-tonne per day surface processing plant that was commissioned in late 2008, and expanded from 3,000 to 3,750 tonnes per day in 2014 and further expanded to 6,000 tonnes per day in 2020. The mill expansion involved installation of a secondary crushing circuit, new thickener and reactor capacity, and minor modifications to the existing grinding circuit and autoclave.

Limited gold concentrate production started in September 2008 and gold dore bar production commenced in January 2009.

The ore at the Kittila mine is treated by grinding, flotation, pressure oxidation and CIL circuits. After grinding, ore processing consists of two stages. In the first stage, ore is enriched by flotation and, in the second stage, the gold is extracted by pressure oxidation and CIL processes. At the end of the second stage, gold is recovered from the carbon in a Zadra elution circuit and recovered from the solution using electrowinning and finally poured into do ........

Recoveries & Grades:

CommodityParameter2021202020192018201720162015
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required84.587.685.784.8
Gold Head Grade, g/t  ......  Subscription required  ......  Subscription required  ......  Subscription required3.84.154.414.44
^ Guidance / Forecast.

Production:

CommodityUnits2021202020192018201720162015
Gold oz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required188,979196,938202,508177,374
Silver koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as payable metal. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Tonnes milled  ......  Subscription required  ......  Subscription required1,590,902 t1,827,335 t1,684,626 t1,666,732 t
Daily ore mining rate  ......  Subscription required  ......  Subscription required5,000 t5,000 t5,000 t5,000 t
Daily processing capacity  ......  Subscription required  ......  Subscription required3,750 t3,750 t3,750 t3,750 t
Daily processing rate  ......  Subscription required  ......  Subscription required4,359 t5,005 t4,615 t5,251 t
Annual processing capacity  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at December 31, 2020:

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven In-Situ (UG) 2,999 kt Gold 4.23 g/t 408 koz
Proven Total 2,999 kt Gold 4.23 g/t 408 koz
Probable In-Situ (UG) 27,434 kt Gold 4.15 g/t 3,659 koz
Probable Total 27,434 kt Gold 4.15 g/t 3,659 koz
Proven & Probable In-Situ (UG) 30,433 kt Gold 4.16 g/t 4,067 koz
Proven & Probable Total 30,433 kt Gold 4.16 g/t 4,067 koz
Measured & Indicated In-Situ (OP) 229 kt Gold 3.41 g/t 25 koz
Measured & Indicated In-Situ (UG) 22,747 kt Gold 2.49 g/t 1,824 koz
Measured & Indicated Total 22,976 kt Gold 2.5 g/t 1,849 koz
Inferred In-Situ (OP) 373 kt Gold 3.89 g/t 47 koz
Inferred In-Situ (UG) 11,620 kt Gold 3.77 g/t 1,408 koz
Inferred Total 11,993 kt Gold 3.77 g/t 1,454 koz

Commodity Production Costs:

CommodityUnits2021202020192018201720162015
Credits (by-product) Gold USD  ......  Subscription required  ......  Subscription required -1 / oz -1 / oz -1 / oz -1 / oz
Cash costs Gold USD  ......  Subscription required  ......  Subscription required 831 / oz 753 / oz 701 / oz 711 / oz
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required 854 / oz 754 / oz 700 / oz 710 / oz
Total cash costs Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required† 853 / oz† 753 / oz† 699 / oz† 709 / oz†
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2020201920182017201620152014
Total operating costs ($/t milled) EUR 86767578777678

Financials:

Units2021202020192018201720162015
Capital expenditures (planned) M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required47.1   57.1   62  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required173.7   87.8   75.9   56.4  
Revenue M USD  ......  Subscription required  ......  Subscription required237.3   248.8   252.3   206.4  
Gross profit M USD  ......  Subscription required  ......  Subscription required8.5   41.8   53.1   31.6  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 15, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 15, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 15, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 15, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 15, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 15, 2021
Subscription required - Subscription is required.

Staff:

EmployeesTotal WorkforceYear
Subscription required Subscription required 2020
Subscription required Subscription required 2019
Subscription required Subscription required 2018
Subscription required Subscription required 2017
Subscription required Subscription required 2016
Subscription required Subscription required 2015
Subscription required Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Annual Report 2018
Sustainability Report 2018
Year-end Mineral Reserves 2018
Annual Information Form 2017
Annual Report 2017
Press Release 2017
Press Release 2017
Sustainability Report 2017
Annual Report 2016
Corporate Presentation 2016
Corporate Presentation 2016
Form 40-F 2016
Other 2016
Sustainability Report 2016
Annual Report 2015
Sustainability Report 2015
Sustainability Report 2014
Technical Report 2009
Subscription required - Subscription is required.

Aerial view:

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